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新安江模型流域汇流参数规律研究

发表时间:2009-02-28  浏览量:1875  下载量:620
全部作者: 徐倩,李致家,陈向东
作者单位: 河海大学水文水资源学院;武汉大学水资源与水电工程科学国家重点实验室
摘 要: 现行的一般水文预报方法依赖于水文站网的资料,而水文站网密度是有限的,对于无资料地区这一方法便难以适用,因此利用有限的水文资料,寻求参数的地区分布规律以达到在无资料地区移用的目的,这具有非常现实的研究意义。流域的一些几何特征和地形特征与流域的汇流参数存在着一些内在联系。利用新安江模型日模、次洪模型,对黄山地区的13个流域进行分析计算,得出流域的河网水流消退系数(the recession constant in the river system, CS)与流域面积的经验关系,即CS值随流域面积的增大而增大。并利用数字高程模型(digital elevation model, DEM),以及Arcview对每个流域通过泰森多边形法对子流域进行划分,提取水系,得到河长资料,最终得出了马斯京根汇流河段数与河长的经验关系。
关 键 词: 水文学及水资源;新安江模型;河网水流消退系数;河长;经验关系
Title: Study on the parameter laws of watershed flow concentration of Xin’anjiang model
Author: XU Qian, LI Zhijia, CHEN Xiangdong
Organization: College of Hydrology and Water Resources, Hohai University; State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University
Abstract: General methods of hydrological forecasting depend on the data of hydrologic network. Because the density of hydrologic network is limit, these methods are hard to apply on no-data area. So learning the area distribution rule of parameters which makes use of the limited hydrological data is important for the application on no-data area. Geometrical and geomorphological characteristics of basins have the internal connection with the basin flow concentration parameters. The Xin’anjiang model was applied on thirteen watersheds in Huangshan area, the parameter CS was analyzed and an empirical relationship was acquired between it and the watershed area, that is, CS increased with the increasing of watershed area. And based on the digital elevation model (DEM), sub-basin division with Thiessen polygon method, drainage network and stream length extracted by Arcview, a relation between Muskingum confluence segments and stream length was also established.
Key words: hydrology and water resources; Xin’anjiang model; the recession constant in the river system; stream length; empirical relationship
发表期数: 2009年2月第4期
引用格式: 徐倩,李致家,陈向东. 新安江模型流域汇流参数规律研究[J]. 中国科技论文在线精品论文,2009,2(4):335-338.
 
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